Commit | Line | Data |
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078abcf9 RP |
1 | /* |
2 | * Battery and Power Management code for the Sharp SL-C7xx and SL-Cxx00 | |
3 | * series of PDAs | |
4 | * | |
5 | * Copyright (c) 2004-2005 Richard Purdie | |
6 | * | |
7 | * Based on code written by Sharp for 2.4 kernels | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License version 2 as | |
11 | * published by the Free Software Foundation. | |
12 | * | |
13 | */ | |
14 | ||
15 | #undef DEBUG | |
16 | ||
17 | #include <linux/module.h> | |
18 | #include <linux/timer.h> | |
19 | #include <linux/init.h> | |
20 | #include <linux/kernel.h> | |
21 | #include <linux/apm_bios.h> | |
22 | #include <linux/delay.h> | |
23 | #include <linux/interrupt.h> | |
c5e1ae97 | 24 | #include <linux/platform_device.h> |
078abcf9 RP |
25 | |
26 | #include <asm/hardware.h> | |
27 | #include <asm/hardware/scoop.h> | |
28 | #include <asm/mach-types.h> | |
29 | #include <asm/irq.h> | |
30 | #include <asm/apm.h> | |
31 | ||
32 | #include <asm/arch/pm.h> | |
33 | #include <asm/arch/pxa-regs.h> | |
34 | #include <asm/arch/sharpsl.h> | |
35 | #include "sharpsl.h" | |
36 | ||
37 | /* | |
38 | * Constants | |
39 | */ | |
40 | #define SHARPSL_CHARGE_ON_TIME_INTERVAL (msecs_to_jiffies(1*60*1000)) /* 1 min */ | |
41 | #define SHARPSL_CHARGE_FINISH_TIME (msecs_to_jiffies(10*60*1000)) /* 10 min */ | |
42 | #define SHARPSL_BATCHK_TIME (msecs_to_jiffies(15*1000)) /* 15 sec */ | |
43 | #define SHARPSL_BATCHK_TIME_SUSPEND (60*10) /* 10 min */ | |
44 | #define SHARPSL_WAIT_CO_TIME 15 /* 15 sec */ | |
45 | #define SHARPSL_WAIT_DISCHARGE_ON 100 /* 100 msec */ | |
46 | #define SHARPSL_CHECK_BATTERY_WAIT_TIME_TEMP 10 /* 10 msec */ | |
47 | #define SHARPSL_CHECK_BATTERY_WAIT_TIME_VOLT 10 /* 10 msec */ | |
c5e1ae97 | 48 | #define SHARPSL_CHECK_BATTERY_WAIT_TIME_ACIN 10 /* 10 msec */ |
078abcf9 RP |
49 | #define SHARPSL_CHARGE_WAIT_TIME 15 /* 15 msec */ |
50 | #define SHARPSL_CHARGE_CO_CHECK_TIME 5 /* 5 msec */ | |
51 | #define SHARPSL_CHARGE_RETRY_CNT 1 /* eqv. 10 min */ | |
52 | ||
53 | #define SHARPSL_CHARGE_ON_VOLT 0x99 /* 2.9V */ | |
54 | #define SHARPSL_CHARGE_ON_TEMP 0xe0 /* 2.9V */ | |
c5e1ae97 RP |
55 | #define SHARPSL_CHARGE_ON_ACIN_HIGH 0x9b /* 6V */ |
56 | #define SHARPSL_CHARGE_ON_ACIN_LOW 0x34 /* 2V */ | |
078abcf9 RP |
57 | #define SHARPSL_FATAL_ACIN_VOLT 182 /* 3.45V */ |
58 | #define SHARPSL_FATAL_NOACIN_VOLT 170 /* 3.40V */ | |
59 | ||
60 | struct battery_thresh spitz_battery_levels_acin[] = { | |
61 | { 213, 100}, | |
62 | { 212, 98}, | |
63 | { 211, 95}, | |
64 | { 210, 93}, | |
65 | { 209, 90}, | |
66 | { 208, 88}, | |
67 | { 207, 85}, | |
68 | { 206, 83}, | |
69 | { 205, 80}, | |
70 | { 204, 78}, | |
71 | { 203, 75}, | |
72 | { 202, 73}, | |
73 | { 201, 70}, | |
74 | { 200, 68}, | |
75 | { 199, 65}, | |
76 | { 198, 63}, | |
77 | { 197, 60}, | |
78 | { 196, 58}, | |
79 | { 195, 55}, | |
80 | { 194, 53}, | |
81 | { 193, 50}, | |
82 | { 192, 48}, | |
83 | { 192, 45}, | |
84 | { 191, 43}, | |
85 | { 191, 40}, | |
86 | { 190, 38}, | |
87 | { 190, 35}, | |
88 | { 189, 33}, | |
89 | { 188, 30}, | |
90 | { 187, 28}, | |
91 | { 186, 25}, | |
92 | { 185, 23}, | |
93 | { 184, 20}, | |
94 | { 183, 18}, | |
95 | { 182, 15}, | |
96 | { 181, 13}, | |
97 | { 180, 10}, | |
98 | { 179, 8}, | |
99 | { 178, 5}, | |
100 | { 0, 0}, | |
101 | }; | |
102 | ||
103 | struct battery_thresh spitz_battery_levels_noac[] = { | |
104 | { 213, 100}, | |
105 | { 212, 98}, | |
106 | { 211, 95}, | |
107 | { 210, 93}, | |
108 | { 209, 90}, | |
109 | { 208, 88}, | |
110 | { 207, 85}, | |
111 | { 206, 83}, | |
112 | { 205, 80}, | |
113 | { 204, 78}, | |
114 | { 203, 75}, | |
115 | { 202, 73}, | |
116 | { 201, 70}, | |
117 | { 200, 68}, | |
118 | { 199, 65}, | |
119 | { 198, 63}, | |
120 | { 197, 60}, | |
121 | { 196, 58}, | |
122 | { 195, 55}, | |
123 | { 194, 53}, | |
124 | { 193, 50}, | |
125 | { 192, 48}, | |
126 | { 191, 45}, | |
127 | { 190, 43}, | |
128 | { 189, 40}, | |
129 | { 188, 38}, | |
130 | { 187, 35}, | |
131 | { 186, 33}, | |
132 | { 185, 30}, | |
133 | { 184, 28}, | |
134 | { 183, 25}, | |
135 | { 182, 23}, | |
136 | { 181, 20}, | |
137 | { 180, 18}, | |
138 | { 179, 15}, | |
139 | { 178, 13}, | |
140 | { 177, 10}, | |
141 | { 176, 8}, | |
142 | { 175, 5}, | |
143 | { 0, 0}, | |
144 | }; | |
145 | ||
146 | /* MAX1111 Commands */ | |
147 | #define MAXCTRL_PD0 1u << 0 | |
148 | #define MAXCTRL_PD1 1u << 1 | |
149 | #define MAXCTRL_SGL 1u << 2 | |
150 | #define MAXCTRL_UNI 1u << 3 | |
151 | #define MAXCTRL_SEL_SH 4 | |
152 | #define MAXCTRL_STR 1u << 7 | |
153 | ||
154 | /* MAX1111 Channel Definitions */ | |
155 | #define BATT_AD 4u | |
156 | #define BATT_THM 2u | |
157 | #define JK_VAD 6u | |
158 | ||
159 | ||
160 | /* | |
161 | * Prototypes | |
162 | */ | |
c5e1ae97 | 163 | static int sharpsl_read_main_battery(void); |
078abcf9 | 164 | static int sharpsl_off_charge_battery(void); |
c5e1ae97 RP |
165 | static int sharpsl_check_battery_temp(void); |
166 | static int sharpsl_check_battery_voltage(void); | |
078abcf9 RP |
167 | static int sharpsl_ac_check(void); |
168 | static int sharpsl_fatal_check(void); | |
169 | static int sharpsl_average_value(int ad); | |
170 | static void sharpsl_average_clear(void); | |
171 | static void sharpsl_charge_toggle(void *private_); | |
172 | static void sharpsl_battery_thread(void *private_); | |
173 | ||
174 | ||
175 | /* | |
176 | * Variables | |
177 | */ | |
178 | struct sharpsl_pm_status sharpsl_pm; | |
179 | DECLARE_WORK(toggle_charger, sharpsl_charge_toggle, NULL); | |
180 | DECLARE_WORK(sharpsl_bat, sharpsl_battery_thread, NULL); | |
181 | ||
182 | ||
183 | static int get_percentage(int voltage) | |
184 | { | |
185 | int i = sharpsl_pm.machinfo->bat_levels - 1; | |
186 | struct battery_thresh *thresh; | |
187 | ||
188 | if (sharpsl_pm.charge_mode == CHRG_ON) | |
189 | thresh=sharpsl_pm.machinfo->bat_levels_acin; | |
190 | else | |
191 | thresh=sharpsl_pm.machinfo->bat_levels_noac; | |
192 | ||
193 | while (i > 0 && (voltage > thresh[i].voltage)) | |
194 | i--; | |
195 | ||
196 | return thresh[i].percentage; | |
197 | } | |
198 | ||
199 | static int get_apm_status(int voltage) | |
200 | { | |
201 | int low_thresh, high_thresh; | |
202 | ||
203 | if (sharpsl_pm.charge_mode == CHRG_ON) { | |
204 | high_thresh = sharpsl_pm.machinfo->status_high_acin; | |
205 | low_thresh = sharpsl_pm.machinfo->status_low_acin; | |
206 | } else { | |
207 | high_thresh = sharpsl_pm.machinfo->status_high_noac; | |
208 | low_thresh = sharpsl_pm.machinfo->status_low_noac; | |
209 | } | |
210 | ||
211 | if (voltage >= high_thresh) | |
212 | return APM_BATTERY_STATUS_HIGH; | |
213 | if (voltage >= low_thresh) | |
214 | return APM_BATTERY_STATUS_LOW; | |
215 | return APM_BATTERY_STATUS_CRITICAL; | |
216 | } | |
217 | ||
218 | void sharpsl_battery_kick(void) | |
219 | { | |
220 | schedule_delayed_work(&sharpsl_bat, msecs_to_jiffies(125)); | |
221 | } | |
222 | EXPORT_SYMBOL(sharpsl_battery_kick); | |
223 | ||
224 | ||
225 | static void sharpsl_battery_thread(void *private_) | |
226 | { | |
227 | int voltage, percent, apm_status, i = 0; | |
228 | ||
229 | if (!sharpsl_pm.machinfo) | |
230 | return; | |
231 | ||
c5e1ae97 | 232 | sharpsl_pm.battstat.ac_status = (STATUS_AC_IN() ? APM_AC_ONLINE : APM_AC_OFFLINE); |
078abcf9 RP |
233 | |
234 | /* Corgi cannot confirm when battery fully charged so periodically kick! */ | |
235 | if (machine_is_corgi() && (sharpsl_pm.charge_mode == CHRG_ON) | |
236 | && time_after(jiffies, sharpsl_pm.charge_start_time + SHARPSL_CHARGE_ON_TIME_INTERVAL)) | |
237 | schedule_work(&toggle_charger); | |
238 | ||
239 | while(1) { | |
c5e1ae97 | 240 | voltage = sharpsl_read_main_battery(); |
078abcf9 RP |
241 | if (voltage > 0) break; |
242 | if (i++ > 5) { | |
243 | voltage = sharpsl_pm.machinfo->bat_levels_noac[0].voltage; | |
244 | dev_warn(sharpsl_pm.dev, "Warning: Cannot read main battery!\n"); | |
245 | break; | |
246 | } | |
247 | } | |
248 | ||
249 | voltage = sharpsl_average_value(voltage); | |
250 | apm_status = get_apm_status(voltage); | |
251 | percent = get_percentage(voltage); | |
252 | ||
253 | /* At low battery voltages, the voltage has a tendency to start | |
254 | creeping back up so we try to avoid this here */ | |
255 | if ((sharpsl_pm.battstat.ac_status == APM_AC_ONLINE) || (apm_status == APM_BATTERY_STATUS_HIGH) || percent <= sharpsl_pm.battstat.mainbat_percent) { | |
256 | sharpsl_pm.battstat.mainbat_voltage = voltage; | |
257 | sharpsl_pm.battstat.mainbat_status = apm_status; | |
258 | sharpsl_pm.battstat.mainbat_percent = percent; | |
259 | } | |
260 | ||
261 | dev_dbg(sharpsl_pm.dev, "Battery: voltage: %d, status: %d, percentage: %d, time: %d\n", voltage, | |
262 | sharpsl_pm.battstat.mainbat_status, sharpsl_pm.battstat.mainbat_percent, jiffies); | |
263 | ||
264 | /* If battery is low. limit backlight intensity to save power. */ | |
265 | if ((sharpsl_pm.battstat.ac_status != APM_AC_ONLINE) | |
266 | && ((sharpsl_pm.battstat.mainbat_status == APM_BATTERY_STATUS_LOW) || | |
267 | (sharpsl_pm.battstat.mainbat_status == APM_BATTERY_STATUS_CRITICAL))) { | |
268 | if (!(sharpsl_pm.flags & SHARPSL_BL_LIMIT)) { | |
269 | corgibl_limit_intensity(1); | |
270 | sharpsl_pm.flags |= SHARPSL_BL_LIMIT; | |
271 | } | |
272 | } else if (sharpsl_pm.flags & SHARPSL_BL_LIMIT) { | |
273 | corgibl_limit_intensity(0); | |
274 | sharpsl_pm.flags &= ~SHARPSL_BL_LIMIT; | |
275 | } | |
276 | ||
277 | /* Suspend if critical battery level */ | |
278 | if ((sharpsl_pm.battstat.ac_status != APM_AC_ONLINE) | |
279 | && (sharpsl_pm.battstat.mainbat_status == APM_BATTERY_STATUS_CRITICAL) | |
280 | && !(sharpsl_pm.flags & SHARPSL_APM_QUEUED)) { | |
281 | sharpsl_pm.flags |= SHARPSL_APM_QUEUED; | |
282 | dev_err(sharpsl_pm.dev, "Fatal Off\n"); | |
283 | apm_queue_event(APM_CRITICAL_SUSPEND); | |
284 | } | |
285 | ||
286 | schedule_delayed_work(&sharpsl_bat, SHARPSL_BATCHK_TIME); | |
287 | } | |
288 | ||
289 | static void sharpsl_charge_on(void) | |
290 | { | |
291 | dev_dbg(sharpsl_pm.dev, "Turning Charger On\n"); | |
292 | ||
293 | sharpsl_pm.full_count = 0; | |
294 | sharpsl_pm.charge_mode = CHRG_ON; | |
295 | schedule_delayed_work(&toggle_charger, msecs_to_jiffies(250)); | |
296 | schedule_delayed_work(&sharpsl_bat, msecs_to_jiffies(500)); | |
297 | } | |
298 | ||
299 | static void sharpsl_charge_off(void) | |
300 | { | |
301 | dev_dbg(sharpsl_pm.dev, "Turning Charger Off\n"); | |
302 | ||
303 | CHARGE_OFF(); | |
304 | CHARGE_LED_OFF(); | |
305 | sharpsl_pm.charge_mode = CHRG_OFF; | |
306 | ||
307 | schedule_work(&sharpsl_bat); | |
308 | } | |
309 | ||
310 | static void sharpsl_charge_error(void) | |
311 | { | |
312 | CHARGE_LED_ERR(); | |
313 | CHARGE_OFF(); | |
314 | sharpsl_pm.charge_mode = CHRG_ERROR; | |
315 | } | |
316 | ||
317 | static void sharpsl_charge_toggle(void *private_) | |
318 | { | |
319 | dev_dbg(sharpsl_pm.dev, "Toogling Charger at time: %lx\n", jiffies); | |
320 | ||
c5e1ae97 | 321 | if (STATUS_AC_IN() == 0) { |
078abcf9 RP |
322 | sharpsl_charge_off(); |
323 | return; | |
c5e1ae97 | 324 | } else if ((sharpsl_check_battery_temp() < 0) || (sharpsl_ac_check() < 0)) { |
078abcf9 RP |
325 | sharpsl_charge_error(); |
326 | return; | |
327 | } | |
328 | ||
329 | CHARGE_LED_ON(); | |
330 | CHARGE_OFF(); | |
331 | mdelay(SHARPSL_CHARGE_WAIT_TIME); | |
332 | CHARGE_ON(); | |
333 | ||
334 | sharpsl_pm.charge_start_time = jiffies; | |
335 | } | |
336 | ||
337 | static void sharpsl_ac_timer(unsigned long data) | |
338 | { | |
c5e1ae97 | 339 | int acin = STATUS_AC_IN(); |
078abcf9 RP |
340 | |
341 | dev_dbg(sharpsl_pm.dev, "AC Status: %d\n",acin); | |
342 | ||
343 | sharpsl_average_clear(); | |
344 | if (acin && (sharpsl_pm.charge_mode != CHRG_ON)) | |
345 | sharpsl_charge_on(); | |
346 | else if (sharpsl_pm.charge_mode == CHRG_ON) | |
347 | sharpsl_charge_off(); | |
348 | ||
349 | schedule_work(&sharpsl_bat); | |
350 | } | |
351 | ||
352 | ||
353 | static irqreturn_t sharpsl_ac_isr(int irq, void *dev_id, struct pt_regs *fp) | |
354 | { | |
355 | /* Delay the event slightly to debounce */ | |
356 | /* Must be a smaller delay than the chrg_full_isr below */ | |
357 | mod_timer(&sharpsl_pm.ac_timer, jiffies + msecs_to_jiffies(250)); | |
358 | ||
359 | return IRQ_HANDLED; | |
360 | } | |
361 | ||
362 | static void sharpsl_chrg_full_timer(unsigned long data) | |
363 | { | |
364 | dev_dbg(sharpsl_pm.dev, "Charge Full at time: %lx\n", jiffies); | |
365 | ||
366 | sharpsl_pm.full_count++; | |
367 | ||
c5e1ae97 | 368 | if (STATUS_AC_IN() == 0) { |
078abcf9 RP |
369 | dev_dbg(sharpsl_pm.dev, "Charge Full: AC removed - stop charging!\n"); |
370 | if (sharpsl_pm.charge_mode == CHRG_ON) | |
371 | sharpsl_charge_off(); | |
372 | } else if (sharpsl_pm.full_count < 2) { | |
373 | dev_dbg(sharpsl_pm.dev, "Charge Full: Count too low\n"); | |
374 | schedule_work(&toggle_charger); | |
375 | } else if (time_after(jiffies, sharpsl_pm.charge_start_time + SHARPSL_CHARGE_FINISH_TIME)) { | |
376 | dev_dbg(sharpsl_pm.dev, "Charge Full: Interrupt generated too slowly - retry.\n"); | |
377 | schedule_work(&toggle_charger); | |
378 | } else { | |
379 | sharpsl_charge_off(); | |
380 | sharpsl_pm.charge_mode = CHRG_DONE; | |
381 | dev_dbg(sharpsl_pm.dev, "Charge Full: Charging Finished\n"); | |
382 | } | |
383 | } | |
384 | ||
385 | /* Charging Finished Interrupt (Not present on Corgi) */ | |
386 | /* Can trigger at the same time as an AC staus change so | |
387 | delay until after that has been processed */ | |
388 | static irqreturn_t sharpsl_chrg_full_isr(int irq, void *dev_id, struct pt_regs *fp) | |
389 | { | |
390 | if (sharpsl_pm.flags & SHARPSL_SUSPENDED) | |
391 | return IRQ_HANDLED; | |
392 | ||
393 | /* delay until after any ac interrupt */ | |
394 | mod_timer(&sharpsl_pm.chrg_full_timer, jiffies + msecs_to_jiffies(500)); | |
395 | ||
396 | return IRQ_HANDLED; | |
397 | } | |
398 | ||
399 | static irqreturn_t sharpsl_fatal_isr(int irq, void *dev_id, struct pt_regs *fp) | |
400 | { | |
401 | int is_fatal = 0; | |
402 | ||
c5e1ae97 | 403 | if (STATUS_BATT_LOCKED() == 0) { |
078abcf9 RP |
404 | dev_err(sharpsl_pm.dev, "Battery now Unlocked! Suspending.\n"); |
405 | is_fatal = 1; | |
406 | } | |
407 | ||
c5e1ae97 | 408 | if (sharpsl_pm.machinfo->gpio_fatal && (STATUS_FATAL() == 0)) { |
078abcf9 RP |
409 | dev_err(sharpsl_pm.dev, "Fatal Batt Error! Suspending.\n"); |
410 | is_fatal = 1; | |
411 | } | |
412 | ||
413 | if (!(sharpsl_pm.flags & SHARPSL_APM_QUEUED) && is_fatal) { | |
414 | sharpsl_pm.flags |= SHARPSL_APM_QUEUED; | |
415 | apm_queue_event(APM_CRITICAL_SUSPEND); | |
416 | } | |
417 | ||
418 | return IRQ_HANDLED; | |
419 | } | |
420 | ||
421 | /* | |
422 | * Maintain an average of the last 10 readings | |
423 | */ | |
424 | #define SHARPSL_CNV_VALUE_NUM 10 | |
425 | static int sharpsl_ad_index; | |
426 | ||
427 | static void sharpsl_average_clear(void) | |
428 | { | |
429 | sharpsl_ad_index = 0; | |
430 | } | |
431 | ||
432 | static int sharpsl_average_value(int ad) | |
433 | { | |
434 | int i, ad_val = 0; | |
435 | static int sharpsl_ad[SHARPSL_CNV_VALUE_NUM+1]; | |
436 | ||
437 | if (sharpsl_pm.battstat.mainbat_status != APM_BATTERY_STATUS_HIGH) { | |
438 | sharpsl_ad_index = 0; | |
439 | return ad; | |
440 | } | |
441 | ||
442 | sharpsl_ad[sharpsl_ad_index] = ad; | |
443 | sharpsl_ad_index++; | |
444 | if (sharpsl_ad_index >= SHARPSL_CNV_VALUE_NUM) { | |
445 | for (i=0; i < (SHARPSL_CNV_VALUE_NUM-1); i++) | |
446 | sharpsl_ad[i] = sharpsl_ad[i+1]; | |
447 | sharpsl_ad_index = SHARPSL_CNV_VALUE_NUM - 1; | |
448 | } | |
449 | for (i=0; i < sharpsl_ad_index; i++) | |
450 | ad_val += sharpsl_ad[i]; | |
451 | ||
452 | return (ad_val / sharpsl_ad_index); | |
453 | } | |
454 | ||
455 | ||
456 | /* | |
457 | * Read MAX1111 ADC | |
458 | */ | |
459 | static int read_max1111(int channel) | |
460 | { | |
461 | return corgi_ssp_max1111_get((channel << MAXCTRL_SEL_SH) | MAXCTRL_PD0 | MAXCTRL_PD1 | |
462 | | MAXCTRL_SGL | MAXCTRL_UNI | MAXCTRL_STR); | |
463 | } | |
464 | ||
c5e1ae97 | 465 | static int sharpsl_read_main_battery(void) |
078abcf9 RP |
466 | { |
467 | return read_max1111(BATT_AD); | |
468 | } | |
469 | ||
c5e1ae97 | 470 | static int sharpsl_read_temp(void) |
078abcf9 RP |
471 | { |
472 | int temp; | |
473 | ||
474 | sharpsl_pm.machinfo->measure_temp(1); | |
475 | ||
476 | mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_TEMP); | |
477 | temp = read_max1111(BATT_THM); | |
478 | ||
479 | sharpsl_pm.machinfo->measure_temp(0); | |
480 | ||
481 | return temp; | |
482 | } | |
483 | ||
c5e1ae97 | 484 | static int sharpsl_read_acin(void) |
078abcf9 RP |
485 | { |
486 | return read_max1111(JK_VAD); | |
487 | } | |
488 | ||
489 | /* | |
490 | * Take an array of 5 integers, remove the maximum and minimum values | |
491 | * and return the average. | |
492 | */ | |
493 | static int get_select_val(int *val) | |
494 | { | |
495 | int i, j, k, temp, sum = 0; | |
496 | ||
497 | /* Find MAX val */ | |
498 | temp = val[0]; | |
499 | j=0; | |
500 | for (i=1; i<5; i++) { | |
501 | if (temp < val[i]) { | |
502 | temp = val[i]; | |
503 | j = i; | |
504 | } | |
505 | } | |
506 | ||
507 | /* Find MIN val */ | |
508 | temp = val[4]; | |
509 | k=4; | |
510 | for (i=3; i>=0; i--) { | |
511 | if (temp > val[i]) { | |
512 | temp = val[i]; | |
513 | k = i; | |
514 | } | |
515 | } | |
516 | ||
517 | for (i=0; i<5; i++) | |
518 | if (i != j && i != k ) | |
519 | sum += val[i]; | |
520 | ||
521 | dev_dbg(sharpsl_pm.dev, "Average: %d from values: %d, %d, %d, %d, %d\n", sum/3, val[0], val[1], val[2], val[3], val[4]); | |
522 | ||
523 | return (sum/3); | |
524 | } | |
525 | ||
c5e1ae97 | 526 | static int sharpsl_check_battery_temp(void) |
078abcf9 RP |
527 | { |
528 | int val, i, buff[5]; | |
529 | ||
530 | /* Check battery temperature */ | |
531 | for (i=0; i<5; i++) { | |
532 | mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_TEMP); | |
c5e1ae97 | 533 | buff[i] = sharpsl_read_temp(); |
078abcf9 RP |
534 | } |
535 | ||
536 | val = get_select_val(buff); | |
537 | ||
538 | dev_dbg(sharpsl_pm.dev, "Temperature: %d\n", val); | |
539 | if (val > SHARPSL_CHARGE_ON_TEMP) | |
540 | return -1; | |
c5e1ae97 RP |
541 | |
542 | return 0; | |
543 | } | |
544 | ||
545 | static int sharpsl_check_battery_voltage(void) | |
546 | { | |
547 | int val, i, buff[5]; | |
078abcf9 RP |
548 | |
549 | /* disable charge, enable discharge */ | |
550 | CHARGE_OFF(); | |
551 | DISCHARGE_ON(); | |
552 | mdelay(SHARPSL_WAIT_DISCHARGE_ON); | |
553 | ||
554 | if (sharpsl_pm.machinfo->discharge1) | |
555 | sharpsl_pm.machinfo->discharge1(1); | |
556 | ||
557 | /* Check battery voltage */ | |
558 | for (i=0; i<5; i++) { | |
c5e1ae97 | 559 | buff[i] = sharpsl_read_main_battery(); |
078abcf9 RP |
560 | mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_VOLT); |
561 | } | |
562 | ||
563 | if (sharpsl_pm.machinfo->discharge1) | |
564 | sharpsl_pm.machinfo->discharge1(0); | |
565 | ||
566 | DISCHARGE_OFF(); | |
567 | ||
568 | val = get_select_val(buff); | |
569 | dev_dbg(sharpsl_pm.dev, "Battery Voltage: %d\n", val); | |
570 | ||
571 | if (val < SHARPSL_CHARGE_ON_VOLT) | |
572 | return -1; | |
573 | ||
574 | return 0; | |
575 | } | |
576 | ||
577 | static int sharpsl_ac_check(void) | |
578 | { | |
579 | int temp, i, buff[5]; | |
580 | ||
581 | for (i=0; i<5; i++) { | |
c5e1ae97 RP |
582 | buff[i] = sharpsl_read_acin(); |
583 | mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_ACIN); | |
078abcf9 RP |
584 | } |
585 | ||
586 | temp = get_select_val(buff); | |
587 | dev_dbg(sharpsl_pm.dev, "AC Voltage: %d\n",temp); | |
588 | ||
c5e1ae97 | 589 | if ((temp > SHARPSL_CHARGE_ON_ACIN_HIGH) || (temp < SHARPSL_CHARGE_ON_ACIN_LOW)) { |
078abcf9 RP |
590 | dev_err(sharpsl_pm.dev, "Error: AC check failed.\n"); |
591 | return -1; | |
592 | } | |
593 | ||
594 | return 0; | |
595 | } | |
596 | ||
597 | #ifdef CONFIG_PM | |
c5e1ae97 | 598 | static int sharpsl_pm_suspend(struct platform_device *pdev, pm_message_t state) |
078abcf9 RP |
599 | { |
600 | sharpsl_pm.flags |= SHARPSL_SUSPENDED; | |
601 | flush_scheduled_work(); | |
602 | ||
603 | if (sharpsl_pm.charge_mode == CHRG_ON) | |
604 | sharpsl_pm.flags |= SHARPSL_DO_OFFLINE_CHRG; | |
605 | else | |
606 | sharpsl_pm.flags &= ~SHARPSL_DO_OFFLINE_CHRG; | |
607 | ||
608 | return 0; | |
609 | } | |
610 | ||
c5e1ae97 | 611 | static int sharpsl_pm_resume(struct platform_device *pdev) |
078abcf9 RP |
612 | { |
613 | /* Clear the reset source indicators as they break the bootloader upon reboot */ | |
614 | RCSR = 0x0f; | |
615 | sharpsl_average_clear(); | |
616 | sharpsl_pm.flags &= ~SHARPSL_APM_QUEUED; | |
617 | sharpsl_pm.flags &= ~SHARPSL_SUSPENDED; | |
618 | ||
619 | return 0; | |
620 | } | |
621 | ||
622 | static void corgi_goto_sleep(unsigned long alarm_time, unsigned int alarm_enable, suspend_state_t state) | |
623 | { | |
624 | dev_dbg(sharpsl_pm.dev, "Time is: %08x\n",RCNR); | |
625 | ||
626 | dev_dbg(sharpsl_pm.dev, "Offline Charge Activate = %d\n",sharpsl_pm.flags & SHARPSL_DO_OFFLINE_CHRG); | |
627 | /* not charging and AC-IN! */ | |
628 | ||
c5e1ae97 | 629 | if ((sharpsl_pm.flags & SHARPSL_DO_OFFLINE_CHRG) && (STATUS_AC_IN() != 0)) { |
078abcf9 RP |
630 | dev_dbg(sharpsl_pm.dev, "Activating Offline Charger...\n"); |
631 | sharpsl_pm.charge_mode = CHRG_OFF; | |
632 | sharpsl_pm.flags &= ~SHARPSL_DO_OFFLINE_CHRG; | |
633 | sharpsl_off_charge_battery(); | |
634 | } | |
635 | ||
636 | sharpsl_pm.machinfo->presuspend(); | |
637 | ||
638 | PEDR = 0xffffffff; /* clear it */ | |
639 | ||
640 | sharpsl_pm.flags &= ~SHARPSL_ALARM_ACTIVE; | |
641 | if ((sharpsl_pm.charge_mode == CHRG_ON) && ((alarm_enable && ((alarm_time - RCNR) > (SHARPSL_BATCHK_TIME_SUSPEND + 30))) || !alarm_enable)) { | |
642 | RTSR &= RTSR_ALE; | |
643 | RTAR = RCNR + SHARPSL_BATCHK_TIME_SUSPEND; | |
644 | dev_dbg(sharpsl_pm.dev, "Charging alarm at: %08x\n",RTAR); | |
645 | sharpsl_pm.flags |= SHARPSL_ALARM_ACTIVE; | |
646 | } else if (alarm_enable) { | |
647 | RTSR &= RTSR_ALE; | |
648 | RTAR = alarm_time; | |
649 | dev_dbg(sharpsl_pm.dev, "User alarm at: %08x\n",RTAR); | |
650 | } else { | |
651 | dev_dbg(sharpsl_pm.dev, "No alarms set.\n"); | |
652 | } | |
653 | ||
654 | pxa_pm_enter(state); | |
655 | ||
656 | sharpsl_pm.machinfo->postsuspend(); | |
657 | ||
658 | dev_dbg(sharpsl_pm.dev, "Corgi woken up from suspend: %08x\n",PEDR); | |
659 | } | |
660 | ||
661 | static int corgi_enter_suspend(unsigned long alarm_time, unsigned int alarm_enable, suspend_state_t state) | |
662 | { | |
663 | if (!sharpsl_pm.machinfo->should_wakeup(!(sharpsl_pm.flags & SHARPSL_ALARM_ACTIVE) && alarm_enable) ) | |
664 | { | |
665 | if (!(sharpsl_pm.flags & SHARPSL_ALARM_ACTIVE)) { | |
666 | dev_dbg(sharpsl_pm.dev, "No user triggered wakeup events and not charging. Strange. Suspend.\n"); | |
667 | corgi_goto_sleep(alarm_time, alarm_enable, state); | |
668 | return 1; | |
669 | } | |
670 | if(sharpsl_off_charge_battery()) { | |
671 | dev_dbg(sharpsl_pm.dev, "Charging. Suspend...\n"); | |
672 | corgi_goto_sleep(alarm_time, alarm_enable, state); | |
673 | return 1; | |
674 | } | |
675 | dev_dbg(sharpsl_pm.dev, "User triggered wakeup in offline charger.\n"); | |
676 | } | |
677 | ||
c5e1ae97 | 678 | if ((STATUS_BATT_LOCKED() == 0) || (sharpsl_fatal_check() < 0) ) |
078abcf9 RP |
679 | { |
680 | dev_err(sharpsl_pm.dev, "Fatal condition. Suspend.\n"); | |
681 | corgi_goto_sleep(alarm_time, alarm_enable, state); | |
682 | return 1; | |
683 | } | |
684 | ||
685 | return 0; | |
686 | } | |
687 | ||
688 | static int corgi_pxa_pm_enter(suspend_state_t state) | |
689 | { | |
690 | unsigned long alarm_time = RTAR; | |
691 | unsigned int alarm_status = ((RTSR & RTSR_ALE) != 0); | |
692 | ||
693 | dev_dbg(sharpsl_pm.dev, "SharpSL suspending for first time.\n"); | |
694 | ||
695 | corgi_goto_sleep(alarm_time, alarm_status, state); | |
696 | ||
697 | while (corgi_enter_suspend(alarm_time,alarm_status,state)) | |
698 | {} | |
699 | ||
700 | dev_dbg(sharpsl_pm.dev, "SharpSL resuming...\n"); | |
701 | ||
702 | return 0; | |
703 | } | |
704 | #endif | |
705 | ||
706 | ||
707 | /* | |
708 | * Check for fatal battery errors | |
709 | * Fatal returns -1 | |
710 | */ | |
711 | static int sharpsl_fatal_check(void) | |
712 | { | |
713 | int buff[5], temp, i, acin; | |
714 | ||
715 | dev_dbg(sharpsl_pm.dev, "sharpsl_fatal_check entered\n"); | |
716 | ||
717 | /* Check AC-Adapter */ | |
c5e1ae97 | 718 | acin = STATUS_AC_IN(); |
078abcf9 RP |
719 | |
720 | if (acin && (sharpsl_pm.charge_mode == CHRG_ON)) { | |
721 | CHARGE_OFF(); | |
722 | udelay(100); | |
723 | DISCHARGE_ON(); /* enable discharge */ | |
724 | mdelay(SHARPSL_WAIT_DISCHARGE_ON); | |
725 | } | |
726 | ||
727 | if (sharpsl_pm.machinfo->discharge1) | |
728 | sharpsl_pm.machinfo->discharge1(1); | |
729 | ||
730 | /* Check battery : check inserting battery ? */ | |
731 | for (i=0; i<5; i++) { | |
c5e1ae97 | 732 | buff[i] = sharpsl_read_main_battery(); |
078abcf9 RP |
733 | mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_VOLT); |
734 | } | |
735 | ||
736 | if (sharpsl_pm.machinfo->discharge1) | |
737 | sharpsl_pm.machinfo->discharge1(0); | |
738 | ||
739 | if (acin && (sharpsl_pm.charge_mode == CHRG_ON)) { | |
740 | udelay(100); | |
741 | CHARGE_ON(); | |
742 | DISCHARGE_OFF(); | |
743 | } | |
744 | ||
745 | temp = get_select_val(buff); | |
c5e1ae97 | 746 | dev_dbg(sharpsl_pm.dev, "sharpsl_fatal_check: acin: %d, discharge voltage: %d, no discharge: %d\n", acin, temp, sharpsl_read_main_battery()); |
078abcf9 RP |
747 | |
748 | if ((acin && (temp < SHARPSL_FATAL_ACIN_VOLT)) || | |
749 | (!acin && (temp < SHARPSL_FATAL_NOACIN_VOLT))) | |
750 | return -1; | |
751 | return 0; | |
752 | } | |
753 | ||
754 | static int sharpsl_off_charge_error(void) | |
755 | { | |
756 | dev_err(sharpsl_pm.dev, "Offline Charger: Error occured.\n"); | |
757 | CHARGE_OFF(); | |
758 | CHARGE_LED_ERR(); | |
759 | sharpsl_pm.charge_mode = CHRG_ERROR; | |
760 | return 1; | |
761 | } | |
762 | ||
763 | /* | |
764 | * Charging Control while suspended | |
765 | * Return 1 - go straight to sleep | |
766 | * Return 0 - sleep or wakeup depending on other factors | |
767 | */ | |
768 | static int sharpsl_off_charge_battery(void) | |
769 | { | |
770 | int time; | |
771 | ||
772 | dev_dbg(sharpsl_pm.dev, "Charge Mode: %d\n", sharpsl_pm.charge_mode); | |
773 | ||
774 | if (sharpsl_pm.charge_mode == CHRG_OFF) { | |
775 | dev_dbg(sharpsl_pm.dev, "Offline Charger: Step 1\n"); | |
776 | ||
777 | /* AC Check */ | |
c5e1ae97 | 778 | if ((sharpsl_ac_check() < 0) || (sharpsl_check_battery_temp() < 0)) |
078abcf9 RP |
779 | return sharpsl_off_charge_error(); |
780 | ||
781 | /* Start Charging */ | |
782 | CHARGE_LED_ON(); | |
783 | CHARGE_OFF(); | |
784 | mdelay(SHARPSL_CHARGE_WAIT_TIME); | |
785 | CHARGE_ON(); | |
786 | ||
787 | sharpsl_pm.charge_mode = CHRG_ON; | |
788 | sharpsl_pm.full_count = 0; | |
789 | ||
790 | return 1; | |
791 | } else if (sharpsl_pm.charge_mode != CHRG_ON) { | |
792 | return 1; | |
793 | } | |
794 | ||
795 | if (sharpsl_pm.full_count == 0) { | |
796 | int time; | |
797 | ||
798 | dev_dbg(sharpsl_pm.dev, "Offline Charger: Step 2\n"); | |
799 | ||
c5e1ae97 | 800 | if ((sharpsl_check_battery_temp() < 0) || (sharpsl_check_battery_voltage() < 0)) |
078abcf9 RP |
801 | return sharpsl_off_charge_error(); |
802 | ||
803 | CHARGE_OFF(); | |
804 | mdelay(SHARPSL_CHARGE_WAIT_TIME); | |
805 | CHARGE_ON(); | |
806 | sharpsl_pm.charge_mode = CHRG_ON; | |
807 | ||
808 | mdelay(SHARPSL_CHARGE_CO_CHECK_TIME); | |
809 | ||
810 | time = RCNR; | |
811 | while(1) { | |
812 | /* Check if any wakeup event had occured */ | |
813 | if (sharpsl_pm.machinfo->charger_wakeup() != 0) | |
814 | return 0; | |
815 | /* Check for timeout */ | |
816 | if ((RCNR - time) > SHARPSL_WAIT_CO_TIME) | |
817 | return 1; | |
c5e1ae97 | 818 | if (STATUS_CHRG_FULL()) { |
078abcf9 RP |
819 | dev_dbg(sharpsl_pm.dev, "Offline Charger: Charge full occured. Retrying to check\n"); |
820 | sharpsl_pm.full_count++; | |
821 | CHARGE_OFF(); | |
822 | mdelay(SHARPSL_CHARGE_WAIT_TIME); | |
823 | CHARGE_ON(); | |
824 | return 1; | |
825 | } | |
826 | } | |
827 | } | |
828 | ||
829 | dev_dbg(sharpsl_pm.dev, "Offline Charger: Step 3\n"); | |
830 | ||
831 | mdelay(SHARPSL_CHARGE_CO_CHECK_TIME); | |
832 | ||
833 | time = RCNR; | |
834 | while(1) { | |
835 | /* Check if any wakeup event had occured */ | |
836 | if (sharpsl_pm.machinfo->charger_wakeup() != 0) | |
837 | return 0; | |
838 | /* Check for timeout */ | |
839 | if ((RCNR-time) > SHARPSL_WAIT_CO_TIME) { | |
840 | if (sharpsl_pm.full_count > SHARPSL_CHARGE_RETRY_CNT) { | |
841 | dev_dbg(sharpsl_pm.dev, "Offline Charger: Not charged sufficiently. Retrying.\n"); | |
842 | sharpsl_pm.full_count = 0; | |
843 | } | |
844 | sharpsl_pm.full_count++; | |
845 | return 1; | |
846 | } | |
c5e1ae97 | 847 | if (STATUS_CHRG_FULL()) { |
078abcf9 RP |
848 | dev_dbg(sharpsl_pm.dev, "Offline Charger: Charging complete.\n"); |
849 | CHARGE_LED_OFF(); | |
850 | CHARGE_OFF(); | |
851 | sharpsl_pm.charge_mode = CHRG_DONE; | |
852 | return 1; | |
853 | } | |
854 | } | |
855 | } | |
856 | ||
857 | ||
858 | static ssize_t battery_percentage_show(struct device *dev, struct device_attribute *attr, char *buf) | |
859 | { | |
860 | return sprintf(buf, "%d\n",sharpsl_pm.battstat.mainbat_percent); | |
861 | } | |
862 | ||
863 | static ssize_t battery_voltage_show(struct device *dev, struct device_attribute *attr, char *buf) | |
864 | { | |
865 | return sprintf(buf, "%d\n",sharpsl_pm.battstat.mainbat_voltage); | |
866 | } | |
867 | ||
868 | static DEVICE_ATTR(battery_percentage, 0444, battery_percentage_show, NULL); | |
869 | static DEVICE_ATTR(battery_voltage, 0444, battery_voltage_show, NULL); | |
870 | ||
871 | extern void (*apm_get_power_status)(struct apm_power_info *); | |
872 | ||
873 | static void sharpsl_apm_get_power_status(struct apm_power_info *info) | |
874 | { | |
875 | info->ac_line_status = sharpsl_pm.battstat.ac_status; | |
876 | ||
877 | if (sharpsl_pm.charge_mode == CHRG_ON) | |
878 | info->battery_status = APM_BATTERY_STATUS_CHARGING; | |
879 | else | |
880 | info->battery_status = sharpsl_pm.battstat.mainbat_status; | |
881 | ||
882 | info->battery_flag = (1 << info->battery_status); | |
883 | info->battery_life = sharpsl_pm.battstat.mainbat_percent; | |
884 | } | |
885 | ||
886 | static struct pm_ops sharpsl_pm_ops = { | |
887 | .pm_disk_mode = PM_DISK_FIRMWARE, | |
888 | .prepare = pxa_pm_prepare, | |
889 | .enter = corgi_pxa_pm_enter, | |
890 | .finish = pxa_pm_finish, | |
891 | }; | |
892 | ||
c5e1ae97 | 893 | static int __init sharpsl_pm_probe(struct platform_device *pdev) |
078abcf9 | 894 | { |
c5e1ae97 | 895 | if (!pdev->dev.platform_data) |
078abcf9 RP |
896 | return -EINVAL; |
897 | ||
c5e1ae97 RP |
898 | sharpsl_pm.dev = &pdev->dev; |
899 | sharpsl_pm.machinfo = pdev->dev.platform_data; | |
078abcf9 RP |
900 | sharpsl_pm.charge_mode = CHRG_OFF; |
901 | sharpsl_pm.flags = 0; | |
902 | ||
903 | sharpsl_pm.machinfo->init(); | |
904 | ||
905 | init_timer(&sharpsl_pm.ac_timer); | |
906 | sharpsl_pm.ac_timer.function = sharpsl_ac_timer; | |
907 | ||
908 | init_timer(&sharpsl_pm.chrg_full_timer); | |
909 | sharpsl_pm.chrg_full_timer.function = sharpsl_chrg_full_timer; | |
910 | ||
911 | pxa_gpio_mode(sharpsl_pm.machinfo->gpio_acin | GPIO_IN); | |
912 | pxa_gpio_mode(sharpsl_pm.machinfo->gpio_batfull | GPIO_IN); | |
913 | pxa_gpio_mode(sharpsl_pm.machinfo->gpio_batlock | GPIO_IN); | |
914 | ||
915 | /* Register interrupt handlers */ | |
916 | if (request_irq(IRQ_GPIO(sharpsl_pm.machinfo->gpio_acin), sharpsl_ac_isr, SA_INTERRUPT, "AC Input Detect", sharpsl_ac_isr)) { | |
917 | dev_err(sharpsl_pm.dev, "Could not get irq %d.\n", IRQ_GPIO(sharpsl_pm.machinfo->gpio_acin)); | |
918 | } | |
919 | else set_irq_type(IRQ_GPIO(sharpsl_pm.machinfo->gpio_acin),IRQT_BOTHEDGE); | |
920 | ||
921 | if (request_irq(IRQ_GPIO(sharpsl_pm.machinfo->gpio_batlock), sharpsl_fatal_isr, SA_INTERRUPT, "Battery Cover", sharpsl_fatal_isr)) { | |
922 | dev_err(sharpsl_pm.dev, "Could not get irq %d.\n", IRQ_GPIO(sharpsl_pm.machinfo->gpio_batlock)); | |
923 | } | |
924 | else set_irq_type(IRQ_GPIO(sharpsl_pm.machinfo->gpio_batlock),IRQT_FALLING); | |
925 | ||
926 | if (sharpsl_pm.machinfo->gpio_fatal) { | |
927 | if (request_irq(IRQ_GPIO(sharpsl_pm.machinfo->gpio_fatal), sharpsl_fatal_isr, SA_INTERRUPT, "Fatal Battery", sharpsl_fatal_isr)) { | |
928 | dev_err(sharpsl_pm.dev, "Could not get irq %d.\n", IRQ_GPIO(sharpsl_pm.machinfo->gpio_fatal)); | |
929 | } | |
930 | else set_irq_type(IRQ_GPIO(sharpsl_pm.machinfo->gpio_fatal),IRQT_FALLING); | |
931 | } | |
932 | ||
933 | if (!machine_is_corgi()) | |
934 | { | |
935 | /* Register interrupt handler. */ | |
936 | if (request_irq(IRQ_GPIO(sharpsl_pm.machinfo->gpio_batfull), sharpsl_chrg_full_isr, SA_INTERRUPT, "CO", sharpsl_chrg_full_isr)) { | |
937 | dev_err(sharpsl_pm.dev, "Could not get irq %d.\n", IRQ_GPIO(sharpsl_pm.machinfo->gpio_batfull)); | |
938 | } | |
939 | else set_irq_type(IRQ_GPIO(sharpsl_pm.machinfo->gpio_batfull),IRQT_RISING); | |
940 | } | |
941 | ||
c5e1ae97 RP |
942 | device_create_file(&pdev->dev, &dev_attr_battery_percentage); |
943 | device_create_file(&pdev->dev, &dev_attr_battery_voltage); | |
078abcf9 RP |
944 | |
945 | apm_get_power_status = sharpsl_apm_get_power_status; | |
946 | ||
947 | pm_set_ops(&sharpsl_pm_ops); | |
948 | ||
949 | mod_timer(&sharpsl_pm.ac_timer, jiffies + msecs_to_jiffies(250)); | |
950 | ||
951 | return 0; | |
952 | } | |
953 | ||
c5e1ae97 | 954 | static int sharpsl_pm_remove(struct platform_device *pdev) |
078abcf9 RP |
955 | { |
956 | pm_set_ops(NULL); | |
957 | ||
c5e1ae97 RP |
958 | device_remove_file(&pdev->dev, &dev_attr_battery_percentage); |
959 | device_remove_file(&pdev->dev, &dev_attr_battery_voltage); | |
078abcf9 RP |
960 | |
961 | free_irq(IRQ_GPIO(sharpsl_pm.machinfo->gpio_acin), sharpsl_ac_isr); | |
962 | free_irq(IRQ_GPIO(sharpsl_pm.machinfo->gpio_batlock), sharpsl_fatal_isr); | |
963 | ||
964 | if (sharpsl_pm.machinfo->gpio_fatal) | |
965 | free_irq(IRQ_GPIO(sharpsl_pm.machinfo->gpio_fatal), sharpsl_fatal_isr); | |
966 | ||
967 | if (!machine_is_corgi()) | |
968 | free_irq(IRQ_GPIO(sharpsl_pm.machinfo->gpio_batfull), sharpsl_chrg_full_isr); | |
969 | ||
970 | del_timer_sync(&sharpsl_pm.chrg_full_timer); | |
971 | del_timer_sync(&sharpsl_pm.ac_timer); | |
972 | ||
973 | return 0; | |
974 | } | |
975 | ||
c5e1ae97 | 976 | static struct platform_driver sharpsl_pm_driver = { |
078abcf9 RP |
977 | .probe = sharpsl_pm_probe, |
978 | .remove = sharpsl_pm_remove, | |
979 | .suspend = sharpsl_pm_suspend, | |
980 | .resume = sharpsl_pm_resume, | |
c5e1ae97 RP |
981 | .driver = { |
982 | .name = "sharpsl-pm", | |
983 | }, | |
078abcf9 RP |
984 | }; |
985 | ||
986 | static int __devinit sharpsl_pm_init(void) | |
987 | { | |
c5e1ae97 | 988 | return platform_driver_register(&sharpsl_pm_driver); |
078abcf9 RP |
989 | } |
990 | ||
991 | static void sharpsl_pm_exit(void) | |
992 | { | |
c5e1ae97 | 993 | platform_driver_unregister(&sharpsl_pm_driver); |
078abcf9 RP |
994 | } |
995 | ||
996 | late_initcall(sharpsl_pm_init); | |
997 | module_exit(sharpsl_pm_exit); |